Services for the mentally retarded.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D008605:Mental Health Services; D014830:Vocational Guidance; D014944:World Health Organization